English Medium कक्षा १० - CBSE Question Bank Solutions for Science

The decomposers in an ecosystem ______.

What will happen if deer is missing in the food chain given below?

Grass → Deer → Tiger

Organisms which synthesise carbohydrates from inorganic compounds by using radiant energy are called ______.

Organisms of a higher trophic level which feed on several types of organisms belonging to a number of lower trophic levels constitute the ______.

Which of the following statement is incorrect?

Which of the following group of organisms are not constituents of a food chain?

1. grass, lion, rabbit, wolf
2. plankton, man, fish, grasshopper
3. wolf, grass, snake, tiger
4. frog, snake, eagle, grass, grasshopper

In the figure given alongside, the various trophic levels are shown in the form of a pyramid. At which trophic level the maximum energy is available?

One of the following is not a consumer. This one is :
(a) giraffe
(b) antelope
(c) algae
(d) alligator

Which of the following is not a producer?
(a) grass
(b) zooplankton
(c) phytoplankton
(d) paddy

One of the following is a micro-consumer. This one is :
(a) ant
(b) lice
(c) fungi
(d) mosquito

In the food chain comprising of a snake, grass, insect, and frog, the secondary consumer is :
(a) insect
(b) snake
(c) frog
(d) grass

The sea water contains water beetles, tadpole, fish and weeds.

Write a food chain comprising all the given organisms.

The sea water contains water beetles, tadpole, fish and weeds.

Which organisms in the food chain are herbivore, and carnivores?

The sea water contains water beetles, tadpole, fish and weeds.

Which organisms are (i) predators, and (ii) prey?

The sea water contains water beetles, tadpole, fish and weeds.

Which organisms can trap solar energy to make food?

The sea water contains water beetles, tadpole, fish and weeds.

Which organism is a secondary consumer?

The following is a food chain that ends with human :
plants → bee → human

Explain how plants provide food for bees.

The following is a food chain that ends with human :
plants → bee → human

How do bees provide food for humans?

The following is a food chain that ends with human :

How does this food chain differ form a usual food chain involving human such as : plants → goat → human?

The following is a food chain that ends with human :

Do you think that the food chain given in this question can really be regarded as a food chain? Explain your answer.